STM32 MCUs

Hi , I have designed one product with STM32WB55 for BLE and Zigbee concurrency. The schematic design I have followed is the with out SMPS design (LDO mode). VFBSMPS, VLXSMPS, VDDSMPS pins are connected to VDD. Our firmware will scan for BLE devices and it works in Nucleo development board. But not functional in our custom board. With our board it is able to connect upto 4 devices only, but the same firmware can handle up to 18 devices in development board. What will be the reasons for this ? 

Hi,I'm using the NUCLEO-U083RC board.I wish to use the TOUCHSENSE library on STM32U083 (or STM32U073) that has the TSC, but STM32CUBEMX 6.16.1 doesn't allow me to enable it.Why ?

I am using STM32CubeMX 6.16.1 to generate project with external Flash loader for STM32N6. When I generate for STM32CubeIDE and build the extmemloader then STM32CubeProgrammer can parse it (the .elf renamed to .stldr). But when I generate CMake project and build with vscode (with STM32 extensions) then STM32CubeProgrammer fails to parse. Compiler/linker removes the StorageInfo structure from output completely. I fooled it to keep it. Now it doesn't fail immediately, but still can't parse any info either.Here's the CubeProgrammer EL list view. First is vscode built loader, second is Eclipse built:I compared the ELF files, Map files, compiler and linker flags. There are plenty of differences and I haven't figured out what exactly causes it. I changed the flags but nothing helped. I noticed vscode uses GCC 14 and STM32CubeIDE uses GCC 13 but tricking vscode to use GCC 13 didn't solve it either. 

Hi,Today I have downloaded STM32IDE. I am trying to develop some projects with my NUCLEO F401RE. I have tried that create a new file from this way but program does not create any .ioc file. Can you help me?Thank you.

Hello ST Community Team,I am facing a TouchGFX project generation issue related to path mismatch while working on an STM32H745 dual-core device – unable to locate .ioc / .cproject ?I am sharing my setup and issue details below.  Environment Details:STM32CubeIDE: 1.17.0TouchGFX: 4.25.0X-CUBE-TOUCHGFX: 4.25.0Controller: STM32H745XIH3Core Used: CM7Toolchain: STM32CubeIDEOS: Windows Issue Description:I have written application code for Core-M7, and when I try to generate images / assets using TouchGFX, the generation fails during Post Generate Target.Error observed:Post Generatetouchgfx update_project --project-file=simulator/msvs/Application.vcxprojDonePost Generate Targettouchgfx update_projectUnable to locate D:/WORKSPACE_APPLICATION/LPOCIP_090126_1430_PM/LPOCIP_SCRATH_jumper_QSPI_APIS_SWETHA_UPDATED_QSPI_SDRAM_CAN_PWM/.cprojectFailedFailedHowever, the actual .ioc file exists at:D:/WORKSPACE_APPLICATION/LPOCIP_090126_1430_PM/LPOCIP_SCRATH_jumper_QSPI_APIS_SWETHA_UPDATED_Q

I have connected and an external HS PHY to STM32F427VGT6 through ULPI pins.Configured USB_OTG_HS in Host Only mode for external Phy with parameter Settings asSpeed: High Speed 480MBits/s Enable internal IP DMA: DisabledPhysical Interface: External PhyUse External VBUS: EnabledSignal Start of Frame: DisabledIn NVIC settings for USB_OTG_HS all three available interrupts are enabled.  USB On The Go HS End Point 1 Out global interrupt true 0 0 USB On The Go HS End Point 1 In global interrupt true 0 0 USB On The Go HS global interrupt true 0 0 In Middleware Packages USB_ Host, FATFS is configured according to attached image.MCU schematic and USB-PHY schematic is also attached.The problem i am facing is STM32 is not detecting USB and gstate of USB always remain to HOST_IDLE, even if i connect or disconnect pendrive.

Split from RF Communication with Nucleo-WL55JC Boards - Seeking Guidance This is a different question.  Hiii,I need to receive the time from the network server. How to fix this issue.Give me the clear steps to fix .

I want to create a new expansion pack. During adding the bundles and components I've got a problem to leave the "Subgroup" empty.Using a dash "-" will be able to apply the component but it raises an validation error during "save and pack". Editing an old expansion package ( I had made a few years ago) , the Subgroup is still optional. What kind of "switch" makes the Subgroup as mandatory?

Hi,I have been trying to communicate with an SPI peripheral (NOR Flash). I want to use SPI in half duplex mode. The problem is that as soon as enable the SPI peripheral I see SPI constantly sending OxFF over MOSI even though I have not written anything on the SPI DR register.Pasting the screenshot of the Salea LABelow is the simple SPI TX code void SPI_SendData(uint8_t* Txdata, uint32_t len) { if((spi_dev->SR & TXE_FLAG)) { spi_dev->DR = *(uint8_t*)Txdata; Txdata++; len--; } if(!(spi_dev->CR1 & SPI_EN)) { spi_dev->CR1 |= SPI_EN; } while(len > 0) { // Wait for TXE FLAG if((spi_dev->SR & TXE_FLAG)) { spi_dev->DR = *(uint8_t*)Txdata; Txdata++; len--; } } }Edited to apply source code formatting - please see How to insert source code for future reference.

I have ordered NUCLEO-G491R to test STANDBY mode power consumption. The power consumption measurements are taken via the PPK2 from Nordic.https://www.nordicsemi.com/Products/Development-hardware/Power-Profiler-Kit-2The steps:1. Take STM32CubeMX example project PWR_SHUTDOWN that is available for the Nucleo board.2. Program the board (ensure the JP5 jumper is at the 5V_STLK position)3. Remove the JP5 jumper because we will be powering the board via the external 3V3 (PPK2) 4. Connect the PPK2 to 3V3 and GND on the board. 5. Start samplingSee the results below:When the device enters STANDBY, the current consumption is measured at about 1.5mA which is way above what is declared on the datasheet.What could be the reason that I cant achieve the declared current consumption for the STANDBY mode via the official example project? I am convinced that measurements of the PPK2 are valid as I have used this board in the past to measure very low currents and it was showing reasona

Dear ST Support Team,We are using the STM32N657X0H3Q1 microcontroller with the XSPI1 interface and have connected two external memory devices, each with an 8-bit data bus.As described in the STM32N6 reference manual (XSPI dual-octal configuration), the two 8-bit memories are connected in parallel and together form a 16-bit wide external memory interface, sharing a single NCS signal.In STM32CubeMX, what we have configured the XSPI peripheral as attached below.And XSPI clock we set as 140mhz.Could you please confirm whether this STM32CubeMX configuration is correct? If there are any additional settings or recommended , kindly let us know.Thank you for your support.Best regards,siddu marka.

Hello everyone,I am facing severe stability issues with a Nucleo-WB55RG project generated via STM32CubeMX (FW Package V1.24.0).The Core Problem: The device advertises and connects, but suffers from random "Silent" Disconnections (no event generated) - connection loops and eventually complete silent (advertisement doesnt start after disconnection). This happens in multiple scenarios, including simple idle connections and bonding attempts.Detailed Scenarios:1. Scenario A: Idle Connection (Without Bonding)I connect using the ST BLE Toolbox app and leave it idle.Behavior: After a random period (non-uniform time), the device automatically disconnects, reconnects, and enters a loop.Observation: Even without initiating bonding, the link is unstable.2. Scenario B: Pairing via Android Bluetooth SettingsI go to Android Settings > Bluetooth and tap the device to Pair.Behavior: The phone displays "Pairing..." indefinitely.Observation: The UART logs show "BLE Connected", but the handshake never

Hello Sir,I urgently want to have an idea whether due to the change of LCD from HT043C KunJjian to RK043FN48H-CT672B Rocktech in 32F746GDISCOVERY Board, is there any changes in the firmware due to this?I would like to request for early response from your team, thanks for your support in advance.Note: From the post only I got a point that RK043FN48H-CT672B Rocktech changed from HT043C KunJjian, 32F746GDISCOVERY B02 and C01 - what's the differen... - STMicroelectronics CommunityBest RegardsSushant Verma

I'm experiencing a HardFault that occurs always on cold boot (after the board sits unpowered for ~1 hour). It also occurs sometimes when flashing and immediately running from the debugger.I'm using FreeRTOS, and I've noticed that commenting a task, flashing the new firmware, no hard faults. De-commenting the same code, flashing again, problem solved (with debugger on).I exit the debugger and try to power cycle the device, all works.After the board sits unpowered for a certain time and I try to turn it on, Hard Fault again.The issue is always the same CFSR.IMPRECISERR (imprecise data access error)I managed to have a call stack and the assembly codeCFSR.IMPRECISERR (imprecise data access error) PC = 0x70017DD2 Stack trace: HardFault_Handler <Exception frame> touchgfx::LCDGPU2D_AXI::blitCopyCompressedRGB565_16BPP() + 0x69d0x7001'7dca: LDRGT R2, [SP, #0x1c] ; Load scratchBuffer address 0x7001'7dcc: STRHGT.W R10, [R2, R5, LSL #1] ; Store halfword 0x7001'7dd0: ADDGT R5, R5, #

Hi,I have 3 radio-buttons in a custom container which is present on several screens.I would like the radio-buttons to keep their states between when switching screens.I have the radio-buttons states reported to the model every time a button is pressed and when the screen changes, the new active view fetches the radio-button state.However, I do not see a function to update a radio-button state without triggering the button action.Is there such a function?

Good day,I've been working for a little on this and can't wrap my head around what the issue is, so figured I'd post here. As a start I'm doing a graduation project from a computer science education and am working on a project that requires a high speed usb to be implemented on a nucleo h755ziq. There are other pieces in play, but those have been disconnected to try and get this one part to work. To make this work I have the nucleo board and a usb3300. This usb3300 has been put on a board and connects to pins placed on the nucleo. I have quadrouple checked the pins and they are all correct. In CUBEMX I setup the USB_OTG_HS external PHY to device mode, as ill be using it as a device which will be detected by an application later in development. I have also set the middleware up for Virtual Com Port as shown below.My pinout is also setup correctly, but for the sake of detail here is the pinout.I have set up the clock for the stm to 192MHZ due to the other components that will b

Not always, but sometimes syscalls.c file is removed upon generating code for X-CUBE-AI middleware.I'm using STM32N6570-DK board and the version of STM32CubeMX is 6.16.1 for Windows 11.

I downloaded CubeMX and I followed the instructions on the attached Readme.html.I run it by ctrl-click and then select Open to mark the author as trusted, but then nothing happens. Does anyone encountered the same problem? How did you solve it? 

Hello,I am designing a board with an STM32H755ZIT6 and want to verify whether my power architecture is safe.Power architecture:Battery inputTwo buck converters:3.3 V buck → MCU VDD5 V buck → LDO + voltage reference → VDDA and VREF+Operating case:For a certain battery voltage range:3.3 V buck is enabled5 V buck is disabledResult:VDD = 3.3 VVDDA and VREF+ = 0 VRelevant datasheet sections:Power supply management (3.5):When VDD > 1 V, all power supplies are independent (except VDDSMPS).Absolute maximum ratings (6.2):“All main power (VDD, VDDA, VDD33USB, VDDSMPS, VBAT) pins must always be connected to the external power supply, in the permitted range.”All conditions appear to be met, but I want to make sure I’m not missing anything, especially since I remember other STM32 families where powering VDD without VDDA is problematic.Question:Is it safe and within spec on the STM32H755 to have VDD powered while VDDA/VREF+ are unpowered, assuming no analog peripherals are used?I would like to co

Hello everyone!That works:int main(void) { ... init_SPI1(); for(;;) SPI1_Send(); }And that doesn't:void TIM2_IRQHandler(void) { SPI1_Send(); TIM2->SR &= ~TIM_SR_UIF; // reset UIF bit in the status register of the timer }Why?Thank you very much!

Hello!I'm working on a project to use some bar-displays 284x76 pixels using ST7789 driver and I'm struggling for about 2 weeks to solve this issue. Everything is perfect using SPI DMA HAL_SPI_Transmit_DMA() if the buffer is in RAM.But if I define a struct like this in file image.h:typedef const struct { const uint32_t width; const uint32_t height; const uint32_t bytes_per_pixel; const uint16_t pixel_data[]; // Array flexibil (C99) } ImageRGB565_16bit; Then in FCU.h I have:#include "images.h" extern ImageRGB565_16bit FCU01; extern ImageRGB565_16bit FCU02; extern ImageRGB565_16bit FCU03; extern ImageRGB565_16bit FCU04; extern ImageRGB565_16bit FCU05; And loading images like this FCU.c:ImageRGB565_16bit FCU01 = { 284, 76, 2, { 0x0000, 0x0000, 0x0000, .. } };When I run the code I'm getting this result on Serial port:FCU Background with alpha 0.2 FCU = 0x80313a4 FCU.pixel_data = 0x80313b0Which looks like the struct resides in FLASH memory.But the HAL_SPI_

Im an engineering student and wanted to dive into PCB designs, so I started off with a PCB design for a vibration monitor system that i first built on arduino. This is my first ever PCB design which I made using reference/data sheets and whatever resources I could find online. Before I started routing I was wondering if could get some feedback on my current design especially for the power supply and decoupling placement, crystal and NRST implementation and general PCB placement issues before routing. Any advice is much appreciated. I am usingSTM32F103C8T for my MCUMPU6050 for the sensor.Screenshots of the Schematic, PCB and pinout are below.

HelloIs there a book about Cortex M7 like Yiu J. The Definitive Guide to ARM Cortex M3 and Cortex M4 Processors ?

Hello I'm trying read sector numer 0 from SD card. I use 4-bit mode for sd card reading. My MCU is on Nucleo development board. Card is correctly initialized but when I'm trying read sector I get zeros in buffer and maybe 10 random not-zero bytes. What do I incorrect?After restart I get the same values when I use the same sd-card. But when I use other card - I get other incorrect data.  

Hi.I started a small project using a custom board with STM32G0B0, SPI flash and 3.5 inch ili9488 LCD, communicating via SPI using the TE pin, without RTOS. Everything loads fine and quite fast, but after 5-40 seconds the uC freezes. Especially when changing the screen, using widgets like the scroll wheel, or even updating text/widgets after n ticks with a random value.What I noticed, before I used more than 3 screens and updating the values, nothing happens, even the animation with texture wrapping works. The logo screen containing the black box, image and text loads immediately after the LCD display initializes. Now I need to load the boxand then display the image and text. Any ideas what I should check?Thanks for the help.